Reference Documentation

Components

These pages describe the components you can use in App Inventor to build your apps.

Each component can have methods, events, and properties. Most properties can be
changed by apps — these properties have blocks you can use to get and set the
values. Some properties can't be changed by apps — these only have blocks you can
use to get the values, not set them. In this document, read-only properties are
shown in
italics
. A few properties are only available in the Designer.